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  • Spectroscopic Investigation Of Nebular Gas (SING): a dedicated NUV spectrograph to study extended objects from a stable space platform 
    Chandra, B; Sachkov, Mikhail; Shanti Prabha, C; Prakash, A; Nair, B. G; Safonova, M; Rai, R; Mohan, Rekhesh; Murthy, J; Shmagin, Vladimir (SPIE-The International Society for Optical Engineering, 2020-12)
    One of the most exciting parts of the astrophysical spectrum is the ultraviolet, with a greater density of absorption and emission lines than any other part of the electromagnetic spectra. Our primary science objective ...
  • Spectroscopic Investigation of Nebular Gas (SING): general objectives and preliminary optical layout 
    Sachkov, M. E; Chandra, B; Murthy, J; Shmagin, V. E; Prabha, Sh; Prakash, A; Nair, B. G; Safonova, M. V; Rai, R; Mohan, R (Institute of Astronomy of the Russian Academy of Sciences, 2020-12)
    The ultraviolet spectral subdiapasons, both near UV (180─300 nm) and far UV (115─180 nm), are highly requested by astrophysicists. The successful space missions like IUE, HST, GALEX and others provided scientists with ...
  • Spectroscopic investigations of planetary nebulae 
    Muthumariappan, C (Astronomical Society of India, 2001)
    The morphologies of three selected asymmetrical planetary nebulae (PNe), namely NGC 4361, NGC 1514 and NGC 246, were studied using spatio-kinematic observations made with an Imaging Fabry-Perot Spectrometer. From the 3D ...
  • Spectroscopic monitoring of symbiotic stars from the Vainu Bappu Observatory 
    Anupama, G. C; Mikołajewska, J (Astronomical Society of the Pacific, 2003)
    We present here the preliminary results of the long term monitoring of the optical spectrum of symbiotic stars from the Vainu Bappu Observatory. Spectra of EG and, AX Per, BX Mon, RX Pup, Rw Pup, RW Hya, AS 210, and StHα ...
  • Spectroscopic monitoring of the symbiotic star BX monocerotis 
    Anupama, G. C; Kamath, U. S; Gurugubelli, U. K; Mikołajewska, J (Vilnius University and the Lithuanian Astronomical Union, 2012)
    Low resolution optical spectra of the symbiotic star BX Monocerotis in the 3500--9000 A range obtained during 1999--2010 are described. The spectrum of BX Mon at all phases is dominated by the cool component, with a red ...
  • Spectroscopic Observation of Coronal Waves 
    Sakurai, T; Ichimoto, K; Raju, K. P; Singh, J (Springer, 2002-10)
    A time sequence over 80 min of coronal green-line spectra was obtained with a corona- graph at the Norikura Solar Observatory. Doppler velocities, line intensities, and line widths were derived through fitting a single ...
  • Spectroscopic Observation of Oscillations in the Corona During the Total Solar Eclipse of 22 July 2009 
    Singh, J; Hasan, S. S; Gupta, G. R; Nagaraju, K; Banerjee, D (Springer, 2011-05)
    We performed high resolution spectroscopy of the solar corona during the total solar eclipse of 22 July 2009 in two emission lines: the green line at 5303 Å due to Fe xiv and the red line at 6374 Å due to Fe x, simultaneously ...
  • Spectroscopic observations of delta orionis 
    Singh, M (Kluwer Academic Publishers, 1982-10)
    The H α profile in the spectrum of δ Orionis shows phase-dependent changes, with a period of variation equal to the orbital period fo the binary system. The profile shape changes from a normal absorption profile at zero ...
  • Spectroscopic observations of first ISOGAL sources 
    Ojha, D. K; Sivarani, T; Parthasarathy, M; Omont, A; Ganesh, S; Simon, G (Astronomical Society of India, 2000)
    Infrared Space Observatory Galactic (ISOGAL) survey at 7 and 15 μm of ~ 22 deg2 of the inner galactic disk and bulge, has detected several hundred thousand sources. Combining ISOGAL survey with I, J, H, Ks data of DENIS ...
  • Spectroscopic observations of Nu Centauri 
    Ashoka, B. N; Surendiranath, R; Kameswara Rao, N (Copernicus Foundation for Polish Astronomy, 1985)
    Presented are radial-velocity observations of the single-line spectroscopic binary and Beta Cephei-type variable Nu Cen, obtained in the period 1983-1984. New orbital elements have been determined by combining these ...
  • Spectroscopic observations of propagating disturbances in a polar coronal hole: evidence of slow magneto-acoustic waves 
    Gupta, G. R; Teriaca, L; Marsch, E; Solanki, S. K; Banerjee, D (EDP Sciences, 2012-10)
    Aims. We focus on detecting and studying quasi-periodic propagating features that have been interpreted in terms of both slow magneto-acoustic waves and of high-speed upflows. Methods. We analyzed long-duration spectroscopic ...
  • Spectroscopic orbit of R CMa 
    Radhakrishnan, K. R; Abhyankar, K. D; Sarma, M. B. K (Astronomical Society of India, 1984-12)
    Spectroscopic observations of the Algol-type binary R CMa during 1980-81 are presented and definitive orbital elements obatined by combining all available measurements of radial velocity. Near circularity of the orbit and ...
  • Spectroscopic Orbits of HR:3009 and HR:3335 
    Raghavender Rao, C; Abhyankar, K. D (Astronomical Society of India, 1990)
    New spectroscopic orbital elements of two short period doublelined spectroscopic eclipsing binaries HR 3009 and HR 3335 are presented
  • Spectroscopic properties of post-AGB stars 
    Parthasarathy, M (Cambridge University Press, 2006)
    A review of the spectroscopic properties of post-AGB stars is presented.
  • Spectroscopic Reductions Using Respect Software 
    Prabhu, T. P; Anupama, G. C (Astronomical Society of India, 1991)
    The RESPECT software has been developed locally at the Vainu Bappu Observatory, Kavalur for spectroscopic data reduction, and is being upgraded continuously. The software is described here in the general perspective of ...
  • Spectroscopic results of the recurrent nova Rs-Ophiuchi 
    Anupama, G. C; Prabhu, T. P (Springer, 1990)
  • Spectroscopic reverberation mapping of Quasar PKS 0736 + 017: broad-line region and black-hole mass 
    Pandey, Shivangi; Rakshit, Suvendu; Woo, Jong-Hak; Stalin, C. S (Oxford University Press on behalf of Royal Astronomical Society, 2022-10)
    To understand the mass distribution and co-evolution of supermassive black holes with their host galaxy, it is crucial to measure the black hole mass of AGN. Reverberation mapping is a unique tool to estimate the black ...
  • Spectroscopic studies of coronal structures using ground and space based data 
    Krishna Prasad, S (Indian Institute of Astrophysics, 2013-09)
  • Spectroscopic studies of R CrB during light minima - Absorption spectrum 
    Kameswara Rao, N; Giridhar, S; Ashoka, B. N (Royal Astronomical Society, 1990-05)
    R CrB was observed during the 1986 shallow minimum to study the spectral changes taking place during light minimum as compared with the spectrum at maximum light. The absorption spectrum at this minimum is very similar to ...
  • Spectroscopic Studies of RV Tau and Related Objects 
    Sumangala Rao, S (Indian Institute of Astrophysics, 2013-04)

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